diff --git a/doc/README-SSH.md b/doc/README-SSH.md
index 9480cc2..3101352 100644
--- a/doc/README-SSH.md
+++ b/doc/README-SSH.md
@@ -32,6 +32,7 @@ $ (trezor|keepkey|ledger)-agent identity@myhost -- COMMAND --WITH --ARGUMENTS
 ```
 
 to start the agent in the background and execute the command with environment variables set up to use the SSH agent.  The specified identity is used for all SSH connections.  The agent will exit after the command completes.
+Note the `--` separator, which is used to separate `trezor-agent`'s arguments from the SSH command arguments.
 
 As a shortcut you can run